Unshakable is an effect that grants resistance to control effects. Most champion and legendary rank creatures have this effect, especially dungeon bosses. Unshakable will grant one stack of Defiance for each player in the area (minimum 3) when the creature has no stacks of Defiance and is targeted by a crowd control skill. Blindness is applied and removed as usual and has its usual duration, but it only causes the next attack to miss 10% of the time; the condition is still removed even if the attack hits.